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Grziwa, S. S. Brems, Sz. Csizmadia, W. D. Cochran","submitted_at":"2017-02-02T14:19:35Z","abstract_excerpt":"We announce the discovery of K2-139 b (EPIC 218916923 b), a transiting warm-Jupiter ($T_\\mathrm{eq}$=547$\\pm$25 K) on a 29-day orbit around an active (log $R^\\prime_\\mathrm{HK}$ = $-$4.46 $\\pm$ 0.06) K0 V star in K2 Campaign 7. We derive the system's parameters by combining the K2 photometry with ground-based follow-up observations. With a mass of~$0.387 _{ - 0.075 } ^ {+ 0.083 } M_{\\rm J}$ and radius of $0.808 _{ - 0.033 } ^ {+ 0.034 } R_{\\rm J}$, K2-139 b is one of the transiting warm Jupiters with the lowest mass known to date. The planetary mean density of $0.91 _{ - 0.20} ^ { + 0.24 }$ $\\"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1702.00691","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-02T14:19:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"708c52faceffe87e59d8e5cf0041174a6d9ad0a4b7ac286e5ccaafa5650244b6","abstract_canon_sha256":"f61756eabef25f2be21ead385ecbb9535a09914433a1f585288137bedb45b263"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:20.245801Z","signature_b64":"ku4lEdqJjiasBbkPsax3s/jAeq0MtFEPiamrpzul41USzomeHgxXLGw/jsB7k2CsfXQ5spp2F+WF61eigD3RDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff9f4bac3a343aa7c49c60aa25a212c630f156c37c917fe7efdfd0073587feb5","last_reissued_at":"2026-05-18T00:24:20.245201Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:20.245201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"K2-139 b: a low-mass warm Jupiter on a 29-day orbit transiting an active K0 V star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Erikson, A. M. S. Smith, A. P. Hatzes, C. Eiroa, C. M. Persson, D. Gandolfi, D. Lorenzo-Oliveira, D. Nespral, E. Guenther, F. Cusano, H. J. Deeg, H. Rauer, I. Rebollido, J. Cabrera, J. Korth, J. Prieto-Arranz, J. Saario, L. Fossati, L. Mancini, M. C. V. Fridlund, M. Endl, M. P\\\"atzold, O. Barrag\\'an, O.V. Zakhozhay, P. Donati, Ph. Eigm\\\"uller, S. Grziwa, S. S. Brems, Sz. Csizmadia, W. D. Cochran","submitted_at":"2017-02-02T14:19:35Z","abstract_excerpt":"We announce the discovery of K2-139 b (EPIC 218916923 b), a transiting warm-Jupiter ($T_\\mathrm{eq}$=547$\\pm$25 K) on a 29-day orbit around an active (log $R^\\prime_\\mathrm{HK}$ = $-$4.46 $\\pm$ 0.06) K0 V star in K2 Campaign 7. We derive the system's parameters by combining the K2 photometry with ground-based follow-up observations. 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